Terry Cain's BIB -why does it work and does anyone have those Fostex Craft Handbooks? - Page 51 - diyAudio
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Old 1st May 2006, 04:10 AM   #501
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And for those who just can't wait any longer....

http://www.zillaspeak.com/bib-gm.asp

Enjoy! (please let me know if you can or cannot see the fr graphs thank you... some say they cannot see them... hmmmm).

I also wanted to again post these pics i got over the weekend... thanks uvellani and peterbrorsson for sending your BIB pics!

http://www.zillaspeak.com/bib-pics.asp

Peace!
Godzilla
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Old 1st May 2006, 06:02 AM   #502
GM is offline GM  United States
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Quote:
Originally posted by fred76


Gulity as charged... BTW, thanks for including the (higher gain version) dims of the 165LB.
Greets!

You're welcome! At the time you were just one of (47), but so far none of the others have posted their Qs in the thread AFAIK unless they've done it using a different email address.

GM
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Old 1st May 2006, 09:28 AM   #503
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The site's looking pretty good isn't it.

Some can't see the graphs? Interesting. I used to have that problem on the single driver site a few months back with the pictures. No idea why -it cleared up after a while, whether it was something James did, or I hjd done to the conmfiguration of my PC. Most odd.
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Old 1st May 2006, 10:22 AM   #504
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Default RE: GRAPHS & CODE

Hi

on Mac OS X 10.3.9 / Safari and Firefox it's all fine.

But a quick look at the source code reveals a quite strange image reference for the graphs (not fot the driver pics). - I'm not familiar at all with Windows ASP, but with html in general, and I think that causes the problem for some maybe older PCs or older systems.

It reads:
Quote:
<!--[if gte vml 1]><v:shape
id="_x0000_s1028" type="#_x0000_t75" style='width:408pt;height:146.25pt'>
<v:imagedata src="BIB-GM_files/image003.emz" o:title=""/>
</v:shape><![endif]--><![if !vml]><img border=0 width=544 height=195
src="BIB-GM_files/image004.gif" v:shapes="_x0000_s1028"><![endif]>
instead of a simple html image tag like this:
Quote:
<img" src="BIB-GM_files/image004.gif" border="0" width="544" height="195>
and here is the resulting image, which I think is not the problem:
Click the image to open in full size.

As far as I have looked at the code, that's for ALL the graphs in the BIB section.
Jeff, maybe your HTML editor got something mixed up, but that should be an easy fix.

I hope that helps making that great site even better

btw. Jeff did you receive my email with the 'how to pics'?

regards, LC
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Old 1st May 2006, 11:14 AM   #505
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Gulp. Far too complicated for me. I'll stick to designing speakers I think... ;-)
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Old 1st May 2006, 11:44 AM   #506
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uhps, found a typo in my code, obviously the image tag must look like this:
Quote:
<img src="BIB-GM_files/image004.gif" border="0" width="544" height="195">
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Old 1st May 2006, 12:33 PM   #507
fred76 is offline fred76  Philippines
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Godzilla,

I commend your effort in creating those pages for builders. Collecting/organizing info from email exchanges is dedication indeed.

BTW, the RTF64 pic you have the page is the Bicone (whizzered) version. But if the sim is virtually the same for both (Bicone and Non-bicone) you can leave it at that.
http://www.supravox.fr/images/hp/215RTF.jpg

Interesting tidbit on two sims for the RTF64. Bill Wood's K-slot Vented Pipe (on Akabak) and GM's BiB (MathCad?) both have a dip ~500Hz... The AkAbak graph below is of course for a diff. design, and the software is said to exhibit it's own artifacts.
As stated here before, the BiB sim does not take into account particular room loading effects etc.

Click the image to open in full size.

GM RTF64 BIB:
Click the image to open in full size.
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Old 1st May 2006, 01:42 PM   #508
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Interesting. Can I show my ignorance here and ask, what is a K Slot design? I remember hearing of it, and seeing a spreadsheet Greg made, but know nothing else.

Best
Scott
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Old 1st May 2006, 03:51 PM   #509
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>>> btw. Jeff did you receive my email with the 'how to pics'?

I have not LC... please send again to godzilla3@hotmail.com

Thanks.
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Old 1st May 2006, 06:54 PM   #510
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Hi
Ran a test cd with fixed frequenses sitting at 4m distance
20Hz: not present but no noices from the driver!

32Hz: audible

40Hz: quite strong output from the mouth

64Hz: hit probably resonance freq really good output

120,280,420,640Hz. In all these freq, there's quite high output from the mouth.It is quite an even level between them, so should be able to minimize output with a little patience.
Jump to 800Hz and completely gone from the mouth to be back a little bit at 1.2kHz. Over that, it is not so bad.

My Monacor SPH60X are now called SPH60WF (whizzer free)
Checked with the above cd and could hear up to 15kHz (then there's a jump to 20kHz on test cd) with whizzer. I removed one whizzer and surprise, could not hear any difference! So both of them are liberated now and 0.5g lighter. (Couldn't resist weighing them, I have two digits scales at work)

The instruments I've used are my ears only, I should get me some basic instruments in the future but has managed so far with the cheapest equipment on earth.
To be continued....
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